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Questions  

The orbital velocity of an artificial satellite in a circular orbit just above the earth's surface is v. For a satellite orbiting at an altitude of half of the earth's radius, the orbital velocity is

a
32v
b
32v
c
23v
d
23v

detailed solution

Correct option is C

v=GMR+h For first satellite h=0,v1=GMR For second satellite h=R2,v2=2GM3Rv2=23v1=23v

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